Feeding selectivity of Holothuria atra in different microhabitat in Panjang Island, Jepara (Java, Indonesia)

Abstract. Hartati R, Zainuri M, Ambariyanto A, Widianingsih W. 2020. Feeding selectivity of Holothuria atra in different microhabitat in Panjang Island, Jepara (Java, Indonesia). Biodiversitas 21: 2233-2239. Particle selectivity by deposit feeder sea cucumber Holothuria atra was an important concept...

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Autores principales:	Retno Hartati, AMBARIYANTO AMBARIYANTO, WIDIANINGSIH WIDIANINGSIH, MUHAMMAD ZAINURI
Formato:	article
Lenguaje:	EN
Publicado:	MBI & UNS Solo 2020
Materias:	chlorophyll-a, organic matter, sea cucumber, sediment characteristic Biology (General) QH301-705.5
Acceso en línea:	https://doaj.org/article/fe9e337e308145959afaae16270f6863
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spelling	oai:doaj.org-article:fe9e337e308145959afaae16270f68632021-11-22T00:35:33ZFeeding selectivity of Holothuria atra in different microhabitat in Panjang Island, Jepara (Java, Indonesia)1412-033X2085-472210.13057/biodiv/d210552https://doaj.org/article/fe9e337e308145959afaae16270f68632020-04-01T00:00:00Zhttps://smujo.id/biodiv/article/view/5653https://doaj.org/toc/1412-033Xhttps://doaj.org/toc/2085-4722Abstract. Hartati R, Zainuri M, Ambariyanto A, Widianingsih W. 2020. Feeding selectivity of Holothuria atra in different microhabitat in Panjang Island, Jepara (Java, Indonesia). Biodiversitas 21: 2233-2239. Particle selectivity by deposit feeder sea cucumber Holothuria atra was an important concept in its feeding ecology. This species utilized the organic matter that coated sediment and detrital particles as food. Thus, particle size, organic matter, and microalgal biomass had been proposed as variables food resources along which niche separation could occur in optimal foraging strategy. This study was conducted in five microhabitats of different coverage of seagrass bed (P1-P4) up to the rubble area (P5) over a tidally variable depth range of 0,5-5m in Panjang island, Jepara. Twenty samples of sea cucumber H. atra were taken from defined microhabitat, along with samples of sediment underneath the sea cucumber. Granulometry of the particles ingested by sea cucumbers, total organic matter, and microphytobenthic biomass (as chlorophyll-a) found throughout their digestive tract (alimentary canal) and in the sediments was analyzed. Comparison of the contents and the rates of organic matter assimilation of the digestive tract with those of the microhabitat sediment were carried out. The results showed that H. atra fed on sediment underneath their body and it was revealed that there were strong (?=0.833-0.876) to very strong (?=0.945) positive relationship between grain size in the sediment and in their alimentary canal which showed their feeding selectivity of the sediment. H. atra also found to have efficiency in feeding by taking advantage of the high TOM content and high abundance of microphytobenthic organisms (presented as chlorophyll-a) in their natural microhabitats.Retno HartatiAMBARIYANTO AMBARIYANTOWIDIANINGSIH WIDIANINGSIHMUHAMMAD ZAINURIMBI & UNS Soloarticlechlorophyll-a, organic matter, sea cucumber, sediment characteristicBiology (General)QH301-705.5ENBiodiversitas, Vol 21, Iss 5 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	chlorophyll-a, organic matter, sea cucumber, sediment characteristic Biology (General) QH301-705.5
spellingShingle	chlorophyll-a, organic matter, sea cucumber, sediment characteristic Biology (General) QH301-705.5 Retno Hartati AMBARIYANTO AMBARIYANTO WIDIANINGSIH WIDIANINGSIH MUHAMMAD ZAINURI Feeding selectivity of Holothuria atra in different microhabitat in Panjang Island, Jepara (Java, Indonesia)
description	Abstract. Hartati R, Zainuri M, Ambariyanto A, Widianingsih W. 2020. Feeding selectivity of Holothuria atra in different microhabitat in Panjang Island, Jepara (Java, Indonesia). Biodiversitas 21: 2233-2239. Particle selectivity by deposit feeder sea cucumber Holothuria atra was an important concept in its feeding ecology. This species utilized the organic matter that coated sediment and detrital particles as food. Thus, particle size, organic matter, and microalgal biomass had been proposed as variables food resources along which niche separation could occur in optimal foraging strategy. This study was conducted in five microhabitats of different coverage of seagrass bed (P1-P4) up to the rubble area (P5) over a tidally variable depth range of 0,5-5m in Panjang island, Jepara. Twenty samples of sea cucumber H. atra were taken from defined microhabitat, along with samples of sediment underneath the sea cucumber. Granulometry of the particles ingested by sea cucumbers, total organic matter, and microphytobenthic biomass (as chlorophyll-a) found throughout their digestive tract (alimentary canal) and in the sediments was analyzed. Comparison of the contents and the rates of organic matter assimilation of the digestive tract with those of the microhabitat sediment were carried out. The results showed that H. atra fed on sediment underneath their body and it was revealed that there were strong (?=0.833-0.876) to very strong (?=0.945) positive relationship between grain size in the sediment and in their alimentary canal which showed their feeding selectivity of the sediment. H. atra also found to have efficiency in feeding by taking advantage of the high TOM content and high abundance of microphytobenthic organisms (presented as chlorophyll-a) in their natural microhabitats.
format	article
author	Retno Hartati AMBARIYANTO AMBARIYANTO WIDIANINGSIH WIDIANINGSIH MUHAMMAD ZAINURI
author_facet	Retno Hartati AMBARIYANTO AMBARIYANTO WIDIANINGSIH WIDIANINGSIH MUHAMMAD ZAINURI
author_sort	Retno Hartati
title	Feeding selectivity of Holothuria atra in different microhabitat in Panjang Island, Jepara (Java, Indonesia)
title_short	Feeding selectivity of Holothuria atra in different microhabitat in Panjang Island, Jepara (Java, Indonesia)
title_full	Feeding selectivity of Holothuria atra in different microhabitat in Panjang Island, Jepara (Java, Indonesia)
title_fullStr	Feeding selectivity of Holothuria atra in different microhabitat in Panjang Island, Jepara (Java, Indonesia)
title_full_unstemmed	Feeding selectivity of Holothuria atra in different microhabitat in Panjang Island, Jepara (Java, Indonesia)
title_sort	feeding selectivity of holothuria atra in different microhabitat in panjang island, jepara (java, indonesia)
publisher	MBI & UNS Solo
publishDate	2020
url	https://doaj.org/article/fe9e337e308145959afaae16270f6863
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Feeding selectivity of Holothuria atra in different microhabitat in Panjang Island, Jepara (Java, Indonesia)

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